Annual report pursuant to Section 13 and 15(d)

Credit Facility (Details)

v3.10.0.1
Credit Facility (Details) - Credit Facility - USD ($)
$ in Millions
May 09, 2018
Dec. 31, 2018
Long-Term debt    
Maximum amount of the Credit Facility $ 12  
Borrowings outstanding   $ 0
Base Rate    
Long-Term debt    
Margin rate added to base rate (as a percent) 1.00%  
Federal Funds Rate    
Long-Term debt    
Margin rate added to base rate (as a percent) 0.50%  
Eurodollar    
Long-Term debt    
Margin rate added to base rate (as a percent) 1.00%